Return to the Essence of Text Editing

Repeat Last Command

Sometimes you’ll want to quickly repeat an Emacs command several times and
more often than not it won’t have a convenient keybinding you can use to
do this. Enter C-x z (repeat) - it simply repeats the most
recently executed command. And the best part? After you’ve pressed
C-x z once you can continue repeating the last command simply by
pressing z. Vi(m) users will probably note that this is quite similar
to the . command there.

For instance - if you want to execute the mark-word command
(bound to M-@) a few times you can do it like this:

12345

M-@
M-@
M-@
M-@
M-@

or like this:

12345

M-@
C-x z
z
z
z

Neat, ah?

P.S. In that particular case it would probably be easier to keep
hitting M-@, but you get the point.